the GNU version of the Collaborative International Dictionary of English
adj. Composed of, or arranged in, sets of four; quaternary.
The Century Dictionary and Cyclopedia
Consisting of four.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. consisting of or especially arranged in sets of four
Word Usage
"I had the good fortune to find two plants of clover, bearing one quinate and several quaternate leaves, on an excursion in the neighborhood of Loosdrecht in Holland."